发明授权
- 专利标题： Gas-filled cold-cathode indicator display tube
- 专利标题（中）： 气体填充冷阴极显示管
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申请号： US3570000D申请日： 1968-06-11
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公开(公告)号： US3570000A公开(公告)日： 1971-03-09
- 发明人: KOSHIZUKA MICHIO , SAITO HIROSHI , HATA SHINICHIRO
- 申请人： JAPN RADIO CO LTD
- 专利权人： Japn Radio Co Ltd
- 当前专利权人： Japn Radio Co Ltd
- 优先权： JP7235767 1967-11-10
- 主分类号： H01J17/32
- IPC分类号： H01J17/32 ; H01J17/49 ; H01J7/40
摘要：
A MINIATURE GAS-FILLED COLD-CATHODE INDICATOR DISPLAY TUBE WHEREIN AN ELCTRICALLY INSULATING OXIDE OF A RADIOACTIVE METAL ISOTOPE HAVING A LONG HALF-LIFE (HAVING A LONG PERIOD OF HALF DAY), SUCH AS THORIUM OXIDE, URANIUM OXIDE OR VANADIUM OXIDE IS PLACED WITHIN THE ENVELOPE OF THE TUBE TO PREVENT THE IONIZATION VOLTAGE FROM INCREASING WHEN HE TUBE IS OPERATED UNDER ADVERSE CONDITIONS.
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